Okay, follow along: Richard Dix plays Paul Dover, an American sculptor living in Paris. Paul's sister Ellen also lives in Paris, and is being blackmailed by a former beau with some love letters she wrote. Paul has friends in low places and agrees to steal the letters from the blackmailer. Paul and his criminal neighbor succeed in getting the letters, but in a botched getaway the letters are secreted in some antique furniture bound for a museum in Los Angeles. The blackmailer also has some criminal friends and they set out to retrieve the stolen letters. Paul travels to LA ahead of his competitors and comes up with a master plan to find the letters: he will pretend to be blind, thereby getting special permission to explore the museum unescorted (this outcome was not obvious to me, but apparently he was right). Paul buys a seeing-eye dog (Ace, the Wonder Dog) and sets his plan in motion. The bad guys put one of their own (Paul Guilfoyle) undercover as a janitor but he is too clumsy and loses his access. The bad guys try to recruit blind Paul Dover to their cause, not knowing he is working against them. Yada yada things work out in the end, the letters are destroyed, Paul gets the lovely museum curator (Whitney Bourne) and the dog.